itmdump no longer in development, move to using itm-decode

[oceanlewis]

I've been working through the Discovery book on NixOS and saw that itm isn't available in nixpkgs. I've decided to try and package it up, but in doing so ran into https://github.com/rust-embedded/itm/issues/40 which has kind of spiraled away as I've realized that itm doesn't even contain itmdump anymore and that the tool has been extracted into a separate repo: https://github.com/japaric/itm-tools

For reasons specific to NixOS, cargo install can be problematic.

Would it makes sense to the maintainers to update the book to use that tool instead of the itmdump tool it currently references?

[k12ish]

+1

It's worth noting that itm has been transferred yet again: https://github.com/rtic-scope/itm